每次不工作期间的 Laravel 收集联合答案

【问题标题】：Laravel collection union during each not working每次不工作期间的 Laravel 收集联合
【发布时间】：2021-12-30 20:18:04
【问题描述】：

union() 有问题，无法插入我的新集合

在我的每个我都有 $mean 集合与女巫我搜索我测试的 slices() 并有一些 $_availabaleSlices 插入到我的 $slices 中（id：4 然后 id：7）但是在整个代码通过后，我在 $slices 中只有第一个 $_availabaleSlices。我做错了什么？

代码

$slices = new Collection();

Means::whereIn('id', $meansId)
    ->get()
    ->each(function ($mean) use (&$slices, $weight) {
        $_availabaleSlices = $mean->slices()
            ->betweenWeight($weight)
            ->get();


        if (0 < $_availabaleSlices->count()) {
            dump('NEEDED',$_availabaleSlices->toArray());
            dump('BEFORE',$slices->toArray());
            $slices = $slices->union($_availabaleSlices);
            dump('AFTER',$slices->toArray());
        }
    });

dd('RESULTS', $slices->toArray());

结果

"NEEDED"
array:1 [
  0 => array:5 [
    "id" => 4
    "deliveries_mean_id" => 3
    "weight_min" => 250.0
    "weight_max" => 600.0
    "deleted_at" => null
  ]
]
"BEFORE"
[]
"AFTER"
array:1 [
  0 => array:5 [
    "id" => 4
    "deliveries_mean_id" => 3
    "weight_min" => 250.0
    "weight_max" => 600.0
    "deleted_at" => null
  ]
]
"NEEDED"
array:1 [
  0 => array:5 [
    "id" => 7
    "deliveries_mean_id" => 4
    "weight_min" => 150.0
    "weight_max" => 700.0
    "deleted_at" => null
  ]
]
"BEFORE"
array:1 [
  0 => array:5 [
    "id" => 4
    "deliveries_mean_id" => 3
    "weight_min" => 250.0
    "weight_max" => 600.0
    "deleted_at" => null
  ]
]
"AFTER"
array:1 [
  0 => array:5 [
    "id" => 4
    "deliveries_mean_id" => 3
    "weight_min" => 250.0
    "weight_max" => 600.0
    "deleted_at" => null
  ]
]
"RESULTS"
array:1 [
  0 => array:5 [
    "id" => 4
    "deliveries_mean_id" => 3
    "weight_min" => 250.0
    "weight_max" => 600.0
    "deleted_at" => null
  ]
]

【问题讨论】：

Union其实是基于key进行的。

标签： laravel laravel-8 laravel-collection

【解决方案1】：

找到了解决办法。我需要使用->merge() 而不是->union()。

【讨论】：